Run results for: JavaScript spread operator vs Object.assign vs mutation performance with condition #3

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Tests:

Using the spread operator
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const conditionState = !secondObject?.moreData const finalObject = { ...firstObject, ...(conditionState ? secondObject : {}) };
Using Object.assign
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const conditionState = !secondObject?.moreData const finalObject = Object.assign(firstObject, conditionState && secondObject);
Using mutation
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const conditionState = !secondObject?.moreData const finalObject = { sampleData: firstObject.sampleData } if (conditionState) { finalObject.moreData = secondObject.moreData }